供应商质量供应能力指数的分析与评价

本文首先简要阐述了供应商质量供应能力,进而提出了质量供应能力指数的概念和计算公式,编制了质量供应能力指数与供应商产品不合格率的对应表,给出了对于重要质量特性和一般质量特性的质量供应能力分析对策示例,最后探讨了应用此方法应注意的问题.     

我国电力中长期发展战略研究

在预测中长期我国用电量需求的基础上,通过分析燃煤发电、水电、核电、非水可再生能源发电、天然气发电的供应能力,阐明了中长期我国电源发展的原则和目标,提出了中长期我国电网发展模式,并指出要以智能配用电、智能调度、大规模储能、超导电力、分布式供电等新型电力技术为支撑实现我国中长期电力发展战略。     

风光柴储互补发电系统研究

风光柴储互补发电系统是一种清洁、高效的供电系统,是一种独立的电力系统,在工业化过程中得到了广泛的应用。本文主要介绍了风光柴储互补发电系统的基本构成,分析了风光柴储互补发电系统配置和资源利用的合理性。     

全球电解二氧化锰供应能力将增加

随着电动汽车（EV）、混合电动车（HEV）开始批量销售,用于锂离子电池（LIB）正极材料的电解二氧化锰的需求将大幅增长。日本三菱汽车、富士重工及日产汽车等公司的LIB正极均采用锰系材料。     

分布式发电技术综述

本文介绍了几种分布式发电的方式,介绍了发展分布式发电的意义,对各种分布式发电技术进行了比较,并对分布式发电并网带来的技术问题进行了简单探讨.     

政策法规——我国正在制订有色金属工业中长期科技发展规划

我国正在制订有色金属工业中长期科技发展规划，以增强行业自主创新能力，推动产业升级，实现有色金属工业可持续发展。     

大渡河流域梯级水电站中长期优化调度研究

瀑布沟电站已经正式开始蓄水,采用先进算法对其进行优化调度研究非常必要。针对粒子群算法存在早熟收敛现象和后期振荡现象,给出一种动态改变惯性权的自适应粒子群算法。该算法原理简单,易编程实现,占用计算机内存少,能以较快的速度收敛到全局最优解,从而为梯级水电站中长期优化调度问题提供了一种有效的解决办法。     

燃煤磁流体发电通道绝缘材料的研究与分析

介绍了4种陶瓷材料用作燃煤磁流体发电通道绝缘材料的试验结果、材料分析和评价。     

基于多源供应的弹性供应网络研究

首先建立了只考虑成本的供应网络基本模型,在此基础上,提出单供应商供应量限制参数实现了多源供应,并且引入期望容忍服务水平,建立了考虑供应商可靠性的弹性供应网络模型并进行算例验证.研究结论表明:和传统模型相比,该模型能降低供应网络中断数量,提高输出均值,降低输出标准差,从而提高供应网络的弹性.     

浅谈我国医院药品供应模式

随着生产规模的发展,采购原材料的费用在生产费用中所占的比重越来越大。由于JIT采购的种种优势能够有效的降低采购成本,使得学者对JIT采购模式进行了深入和广泛的研究。JIT采购模式出现的早期,学者对其的研究多集中在库存的管理及企业内部的管理模式。随着供应链管理模式的产生和发展,将JIT采购纳入供应链管理体系,扩展到整条供应链中企业中,已经成为近期研究的重点。     

我国可再生能源中长期（2030、2050）发展战略目标与途径

基于我国调整能源结构的战略方针和以煤为主要一次能源的国情,根据可再生能源在技术、产业等方面的发展形势,从可持续发展的战略高度和大能源体系的视野,分析了2030年、2050年我国可再生能源发展的战略目标、技术路线、发展重点和保障政策,指出通过重点发展可再生能源发电、大力发展可再生能源热利用和燃气技术、积极努力发展生物质交通燃料技术,使可再生能源从目前的补充能源,逐步提升到2020年的替代能源、2030年的主流能源和2050年的主导能源的战略地位。     

功率超声电源的研制

本文介绍了一种具有无相差频率自动跟踪和输出功率恒定功能的功率超声电源,此电源采用集成锁相环来实现无相差自动频率跟踪,采用ＰＷＭ方式控制ＢＵＣＫ电路的斩波,达到恒功能及功率可调的目的。另外,此电源系统还有电路简单、工作可靠、体积小、重量轻、成本低、实用性强等特点。     

Integrated workforce capacity and inventory management under labour supply uncertainty

In a manufacturing environment with volatile demand, inventory management can be coupled with dynamic capacity adjustments for handling the fluctuations more effectively. In this study, we consider the problem of integrated capacity and inventory management under non-stationary stochastic demand and capacity uncertainty. The capacity planning problem is investigated from the workforce planning perspective where the capacity can be temporarily increased by utilising contingent workers from an external labour supply agency. The contingent capacity received from the agency is subject to an uncertainty, but the supply of a certain number of workers can be guaranteed through contracts. There may also be uncertainty in the availability of the permanent and contracted workers due to factors such as absenteeism and fatigue. We formulate a dynamic programming model to make the optimal capacity decisions at a tactical level (permanent workforce size and contracted number of workers) as well as the operational level (number of workers to be requested from the external labour supply agency in each period), integrated with the optimal operational decision of how much to produce in each period. We analyse the characteristics of the optimal policies and we conduct an extensive numerical analysis that helps us provide several managerial insights.     

Influence of power and trust on the intention to adopt electronic supply chain management in China

Electronic supply chain management (eSCM) has become a popular Web-based seamless supply chain process. Given that Chinese firms are important parts of global supply chains, it is imperative to investigate factors that would affect eSCM adoption in China. In this study, we examine the impact of three power sources – non-mediated, coercive-mediated and reward-mediated power – on the three dimensions of trust – competence, goodwill and contractual – and their influence in turn on a firm’s eSCM adoption intention in China. We collected data through a survey of 131 manufacturing and service firms in China. Our results show that non-mediated power is positively associated with competence and goodwill trust but negatively related to contractual trust. Coercive-mediated power only negatively affects competence and goodwill trust. Reward-mediated power does not affect any type of trust significantly. The results also provide empirical support for the positive effects of competence and contractual trust on the intention to adopt eSCM. This paper contributes knowledge about the power–trust relationship in China from a supply chain perspective and presents a multi-dimensional explanation of the relationships between power, trust and intention to adopt eSCM.     

LCC resonant converter with power factor correction for power supply units

This article presents a power supply using an LCC resonant converter having power factor correction with burst mode operation. In order to improve the performance from no load to full load, a microcontroller with an active control has been introduced. The light load efficiency is increased using burst mode operation. The proposed controller provides zero voltage switching. Mathematical analysis is done, and steady state characteristics are drawn. A simple design example is given based on the equations. The proposed converter has good efficiency with good power factor at all loading conditions. This is shown by the simulation and experimental results obtained through testing the prototype.     

对我国中长期（2030、2050）节能发展战略的系统分析

首先,从全生命周期视角出发,对我国能耗增长的根源进行了剖析;其次,剖析了节能的基本概念和内涵,指出应重点区别建设型能耗和运行型能耗;最后,总结了中长期节能的战略目标,以及制度节能、系统节能、技术节能3类实现措施,并对系统节能开展了住宅寿命问题的案例分析。     

Long term steam oxidation of TP 347H FG in power plants

Abstract

The long term oxidation behaviour of TP 347H FG at ultra supercritical steam conditions was assessed by exposing the steel in test superheater loops in a Danish coal-fired power plant. The steamside oxide layer was investigated with scanning electron microscopy and energy dispersive X-ray diffraction in order to reveal the effect of oxidation time and temperature on the microstructure.

A double layered oxide formed during steam oxidation. The morphology of the inner Cr-containing layer was influenced by the oxidation temperature. At temperatures below 585°C, it consisted of regions of Fe–Ni–Cr spinel surrounded by Fe–Cr oxide. At higher temperatures almost the entire inner oxide layer was composed of Fe–Cr oxide. Possible mechanisms for the oxide growth are discussed and it is suggested that faster Cr transport within the alloy at higher temperatures explains the change in morphology.

The thickness of the inner oxide layer appeared to be independent of oxidation time and temperature for exposes less than 30 000 h; however, after 57 554 h, the thickness had increased significantly at the lowest temperatures.     

单电源低电压InGaP/InGaAsPHEMT低噪声单片放大器

制备了增强型ＩｎＧａＰ／ＩｎＧａＡｓ ＰＨＥＭＴ器件结构、阈值控制以及单电源低电压低噪声单片放大器。获得了阈值电压接近０Ｖ的增强型ＩｎＧａＰ／ＩｎＧａＡｓ ＰＨＥＭＴ器件,并在此基础上设计制作了可在１．５￣３Ｖ低电压和单电源下工作的２．５ＧＨｚ低噪声单片放大器。同时对该电路性能的进一步提高进行了模拟分析。     

Absorptive and desorptive capacity configurations in supply chains: An inverted U-shaped relationship

The extant literature has highlighted the importance of knowledge transfer between a buyer and its supply network for strengthening supply chain competence. This is a bi-directional exchange where the buyer and supply network each act as the sender and receiver of knowledge. Prior research has however largely focused on the knowledge recipient only. We consider both sender and recipient using two key dynamic capabilities related to knowledge transfer: (i) desorptive capacity, which enables the safe transfer of knowledge from the sender; and, (ii) absorptive capacity, which enables the acquisition and assimilation of external knowledge by the recipient. Using the concept of ‘fit’, we investigate whether organisations strengthen supply chain competence when their desorptive capacity exceeds that of their supply network's (positive misfit) and consider the moderating role of the organisation’s and supply network’s absorptive capacity. Multiple regression analysis of survey data from 250 firms identifies an inverted U-shaped relationship between positive desorptive capacity misfit and supply chain competence. Further, this relationship is shown to be moderated by the supply network’s absorptive capacity level. The paper furthers our understanding of supply chain knowledge management enabling buyers and their supply networks to achieve more successful knowledge transfer outcomes.